any suggestions for a under $50ish dollers noise isolation headphones?

Check the buyers guides linked in the opening post of this thread. There aren't a large selection of quality choices within that budget. Cheap materials and build tend to limit isolation. You may be better off looking for an on ear portable headphone. There is another section of the forum for that:

My current headphones are a 4-ish year old Sennheiser HD-595s (the earcups cracked and chipped off between the two "n"s, but they still work) and a Hifiman HE-400 that I got as a Christmas gift last year . I'm using them with an O2/ODAC combo and appreciate both pairs. My music tastes are pretty wide ranging, although I primarily listen to Kpop (which the 595's are great with) and a lot of electronic music (which I found the better bass on the HE-400 to be perfect for).

I'm looking for portable, ideally closed, headphones under $150 (could possibly stretch to $200) that work well without amplification but also would do well when plugged in to the O2/ODAC. Important factors would be comfort (I have a relatively big head), durability (I live in upstate NY, and I would like to be able to wear it outside in the cold and snow), and headphones that work well with any genre (i.e. not lacking in bass, mids, or treble). A carrying case would be nice too, as I will be primarily using this outside of my room.

I have looked at the V-moda M80, Phiaton MS-400, Ultrasone HFI-580, Denon AH-D1100, Beyerdynamic T50P/DT 1350, and Sennheiser Amperior/Momentum. Unfortunately, the Beyer and the Senns both exceed my budget.

@ KG Jag: As it seems youre quite an expert on Hifiman I would like to ask you: how dificult are the Hifiman HE-500 to dirve?

More difficult than average to drive due to their low sensitivity rating. On the low end, the original Schiit Asgard drives them. The new Asgard (the "2") that is about to be shipped is said to have more power. This may help:

More difficult than average to drive due to their low sensitivity rating. On the low end, the original Schiit Asgard drives them. The new Asgard (the "2") that is about to be shipped is said to have more power. This may help:

My current headphones are a 4-ish year old Sennheiser HD-595s (the earcups cracked and chipped off between the two "n"s, but they still work) and a Hifiman HE-400 that I got as a Christmas gift last year . I'm using them with an O2/ODAC combo and appreciate both pairs. My music tastes are pretty wide ranging, although I primarily listen to Kpop (which the 595's are great with) and a lot of electronic music (which I found the better bass on the HE-400 to be perfect for).

I'm looking for portable, ideally closed, headphones under $150 (could possibly stretch to $200) that work well without amplification but also would do well when plugged in to the O2/ODAC. Important factors would be comfort (I have a relatively big head), durability (I live in upstate NY, and I would like to be able to wear it outside in the cold and snow), and headphones that work well with any genre (i.e. not lacking in bass, mids, or treble). A carrying case would be nice too, as I will be primarily using this outside of my room.

I have looked at the V-moda M80, Phiaton MS-400, Ultrasone HFI-580, Denon AH-D1100, Beyerdynamic T50P/DT 1350, and Sennheiser Amperior/Momentum. Unfortunately, the Beyer and the Senns both exceed my budget.

The best in the neutral zone (sans Romulians) is the Sennheiser HD25-1 II, which are right at $200 absent a special deal.

More difficult than average to drive due to their low sensitivity rating. On the low end, the original Schiit Asgard drives them. The new Asgard (the "2") that is about to be shipped is said to have more power. This may help:

More difficult than average to drive due to their low sensitivity rating. On the low end, the original Schiit Asgard drives them. The new Asgard (the "2") that is about to be shipped is said to have more power. This may help:

More difficult than average to drive due to their low sensitivity rating. On the low end, the original Schiit Asgard drives them. The new Asgard (the "2") that is about to be shipped is said to have more power. This may help:

Looking for closed back, over ear, passive isolating headphones for home and travel. I take several long flights a year and need something comfortable with good isolation. Budget is 100-200. Priorities are comfort, isolation/sound (tied), and portability. I want something that sounds great at home but will work on flights and with airline movies and traveling with MP3s.

I've been thinking of VModa LP2, Phiaton MS400, Beyerdynamic custom1 or DT70, or M50s, but am open for suggestion. I'd like the best bang for the buck. The DT770s seem to get great reviews for comfort and sound, but not sure about driving 80ohm with Nokia 920 or airline movies. Hate to have to invest and carry an amp in addition to headphones.

I've recently tried Blaupunkt Comfort 112 noise cancelation which I thought had awful sound even after burning them in and sub par noise canceling. That is scaring me from active noise canceling headphones at this price point.

Also tried AKG k451 based on recommendation, but don't think supraaural will provide the isolation I'd like.

Looking for closed back, over ear, passive isolating headphones for home and travel. I take several long flights a year and need something comfortable with good isolation. Budget is 100-200. Priorities are comfort, isolation/sound (tied), and portability. I want something that sounds great at home but will work on flights and with airline movies and traveling with MP3s.

I've been thinking of VModa LP2, Phiaton MS400, Beyerdynamic custom1 or DT70, or M50s, but am open for suggestion. I'd like the best bang for the buck. The DT770s seem to get great reviews for comfort and sound, but not sure about driving 80ohm with Nokia 920 or airline movies. Hate to have to invest and carry an amp in addition to headphones.

I've recently tried Blaupunkt Comfort 112 noise cancelation which I thought had awful sound even after burning them in and sub par noise canceling. That is scaring me from active noise canceling headphones at this price point.

Also tried AKG k451 based on recommendation, but don't think supraaural will provide the isolation I'd like.

Your advice is appreciated.

Check out Soundmagic HP100's. I've had them and they isolate pretty well - I think it's about 23 db. Plus they sound great for their price.

Looking for closed back, over ear, passive isolating headphones for home and travel. I take several long flights a year and need something comfortable with good isolation. Budget is 100-200. Priorities are comfort, isolation/sound (tied), and portability. I want something that sounds great at home but will work on flights and with airline movies and traveling with MP3s.

I've been thinking of VModa LP2, Phiaton MS400, Beyerdynamic custom1 or DT70, or M50s, but am open for suggestion. I'd like the best bang for the buck. The DT770s seem to get great reviews for comfort and sound, but not sure about driving 80ohm with Nokia 920 or airline movies. Hate to have to invest and carry an amp in addition to headphones.

I've recently tried Blaupunkt Comfort 112 noise cancelation which I thought had awful sound even after burning them in and sub par noise canceling. That is scaring me from active noise canceling headphones at this price point.

Also tried AKG k451 based on recommendation, but don't think supraaural will provide the isolation I'd like.

Your advice is appreciated.

The UE6000 may be your best and most versatile choice within your budget. See: